Kubota V2403-CR-E4 Workshop Manual

WORKSHOP MANUAL

DIESEL ENGINE

D1803-CR-E4,D1803-CR-TE4,

D1803-CR-TIE4,V2403-CR-E4,

V2403-CR-TE4,

V2403-CR-TE4BG,

V2403-CR-TIE4

KiSC issued 12, 2018 A

TO THE READER

This workshop manual provides safety information for service activity, general information such as specifications and

dimensions of the machine, mechanisms and structure descriptions of the machine, and service procedures.

Safety

This section contains safety service descriptions and safety label information.

General

This section contains general instructions, tightening torques, general machine information and special tools.

Maintenance

This section contains information for the recommended oil and general maintenance procedures.

Each section basically consists of mechanism and servicing.

Mechanism

part

contains information and explanations for the structure, functions, and specifications of the machine

or component parts. This part should become prehended before proceeding with troubleshooting, disassembling,

assembling, and servicing works.

Servicing

Servicing part contains information and procedures for maintenance, troubleshooting and repair works. The reader

should follow these instructions in order to satisfy any servicing work safely, correctly and quickly.

In this WSM, service specifications and service limits are defined as followings.

Service specifications:

Specification which corresponds to new machine's ex-factory. It is based on quality standard, drawings, or actual

measurements conducted by Kubota. This value is used to determine whether there is a problem with the machine in

the event of a troubleshooting. However, it is necessary to consider degradation due to wear, based on the operating

time of the machine, application or maintenance condition.

Service limits:

Service limit is a value corresponding to the recommended performance limit by taking long term-use wear into

account. When the service limit is reached, the machine is required to have proper repair, overhaul or replacement in

order to keep safe and adequate performance.

All of the illustrations, photographs, specifications, and other information in this manual were created based on the

latest model at the time of publication.

The parts names used in this manual are unified into names representing the functions of the parts. Therefore, it does

not necessarily correspond to the names used in other materials (parts list, operators manual etc.) and the name on

the label / identification plates on the product.

Kubota reserves the right to change all information at any time without notice.

February 2013

KiSC issued 12, 2018 A

RECORD OF REVISIONS

Main revised contents and corrective measures are described in a table.

Find the main revised point and corrective measure through the reference page.

Last digit

of the Code

No.

Month of

Revision

Part name Main revised point and corrective measure

Reference

page

1 2013.07 Rail pressure sensor

EGR valve lift sensor

Common rail and injection

pipes

V

alve guide

Correction point

• 2. SPECIFICA

TIONS

• 3. PERFORMANCE CURVES

• 4. MAINTENANCE CHECK LIST

– Cleaning water jacket and radiator interior

– Changing radiator coolant (L.L.C.)

• Mechanism

– Rail pressure sensor

– EGR valve lift sensor

• Servicing

– Adjusting valve clearance

– Common rail and injection pipes

– Replacing valve guide

– Measuring angular deviation between crankshaft TDC

and crankshaft position sensor detected TDC

2-10

2-14

3-1

3-13

3-28

4-24

4-98

4-112

2 2013.12 Thermostat

Rail

Diesel particulate filter

(DPF)

Air cleaner and others

Crankshaft position sensor

Fuel camshaft

Pistons

Flywheel

Main bearing case assem-

bly

Correction point

• 2. SPECIFICATIONS

• Model name and engine serial number

• Checking valve clearance

• Judging reuse of DPF filter comp after cleaning (Cleaning

contractor)

• Checking DPF differential pressure pipes and hoses

• Thermostat

• Rail

• Function of diesel particulate filter (DPF)

• TROUBLESHOOTING

• Adjusting valve clearance

• Disassembling and assembling

– Air cleaner and others

– Filter comp (DPF) (If necessary)

– Crankshaft position sensor

– Fuel camshaft

– Pistons

– Flywheel

– Main bearing case assembly

2-10

3-16

3-23

4-87

3 2014.06 Oil separator

Positive crankcase ventila-

tion (PCV) valve

Starter

Alternator

Glow plug

Correction point

• MAINTENANCE CHECK LIST

•

Check and maintenance

– Replacing oil separator element

– Checking positive crankcase ventilation (PCV) valve

• Checking and servicing

– Checking starter motor

– Checking magnetic switch of starter

– Checking magnetic switch continuity

– Checking alternator on unit

– Checking glow plug continuity

3-1

3-19

4-103

4-104

4-105

4-106

4 2014.09 Oil separator

Pressure limiter valve

V2403-CR-TE4BG

Correction the picture

Correction the information

Added the information of V2403-CR-TE4BG

4-6

5 2014.11 D1803-CR-TIE4

V2403-CR-TIE4

Added the model about D1803-CR-TIE4 and V2403-CR-TIE4

These models are equipped DOC only instead of DPF.

－

6 2017.04 SCV Added the information about disassembling and assembling. 4-124

4-148

(Continued)

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

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KiSC issued 12, 2018 A

Last digit

of the Code

No.

Month of

Revision

Part name Main revised point and corrective measure

Reference

page

7 2018.12 Mechanism

Servicing

Added the information about all mechanism section.

Added the follow information about checking and adjusting.

• Checking injector

•

Checking suction control valve (SCV)

• Checking sensors

• Adjusting air gap between crank/camshaft position sensor

and flywheel/pulsar gear

Separate disassembling and assembling

Added follow servicing information.

• Replacing injector

• Replacing engine ECU

• Replacing DPF

Change notification about fan drive pulley mounting nut tightening

torque

4-96

4-107

4-114

4-115

4-191

4-193

4-196

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KiSC issued 12, 2018 A

CONTENTS

1. SAFETY

SAFETY FIRST

..................................................................................................................................................1-1

1.

Working precautions.................................................................................................................................1-1

2. Preparing for emergencies .......................................................................................................................1-1

3. Working cautions ......................................................................................................................................1-2

4. Starting the machine safely ......................................................................................................................1-3

5. Preventing fires.........................................................................................................................................1-3

6. Preventing acid burns...............................................................................................................................1-4

7. Avoiding high pressure fluid......................................................................................................................1-4

8. Avoiding hot exhaust ................................................................................................................................1-4

9. Cleaning exhaust filter ..............................................................................................................................1-4

2. GENERAL

GENERAL WORKING PRECAUTIONS ............................................................................................................2-1

1. Tightening bolts and nuts..........................................................................................................................2-1

2. Applying thread-locking fluid.....................................................................................................................2-1

3. Installing circlips .......................................................................................................................................2-1

4. Handling liquid gasket ..............................................................................................................................2-2

5. Replacing O-rings.....................................................................................................................................2-2

6. Replacing oil seals....................................................................................................................................2-2

7. Handling the battery .................................................................................................................................2-3

8. Handling electrical wiring..........................................................................................................................2-3

9. Handling fuses..........................................................................................................................................2-4

10. Handling connectors...............................................................................................................................2-5

11. Wiring color .............................................................................................................................................2-6

12. Dispose fluids correctly...........................................................................................................................2-6

GENERAL MACHINE INFORMATION .............................................................................................................. 2-7

1. Engine identification .................................................................................................................................2-7

1.1 Engine model name and engine serial number................................................................................. 2-7

1.2 E4B engine........................................................................................................................................2-8

1.3 Cylinder number................................................................................................................................2-9

2. Muffler full assembly identification............................................................................................................2-9

2.1 Part number and serial number (DPF) ..............................................................................................2-9

3. Specifications .........................................................................................................................................2-10

3.1 Specification for D1803-CR-E4, TE4 ..............................................................................................2-10

3.2 Specification for V2403-CR-E4, TE4............................................................................................... 2-11

3.3 Specification for D1803-CR-TIE4, V2403-CR-TIE4 ........................................................................2-12

3.4 Specification for V2403-CR-TE4BG................................................................................................2-13

4. Performance curves ...............................................................................................................................2-14

4.1 Performance curve for D1803-CR-E4 .............................................................................................2-14

4.2 Performance curve for D1803-CR-TE4...........................................................................................2-15

4.3 Performance curve for D1803-CR-TIE4..........................................................................................2-16

4.4 Performance curve for V2403-CR-E4 .............................................................................................2-17

4.5 Performance curve for V2403-CR-TE4 ...........................................................................................2-18

4.6 Performance curve for V2403-CR-TIE4 ..........................................................................................2-19

5. Dimensions.............................................................................................................................................2-20

5.1 Dimensions .....................................................................................................................................2-20

6. Wiring diagram .......................................................................................................................................2-21

6.1 Engine intermediate harness (Engine side harness) ......................................................................2-21

6.2 Injector intermediate harness (Engine side harness)......................................................................2-23

6.3 Engine ECU intermediate harness (OEM side harness).................................................................2-24

6.4 System wiring diagram for D1803-CR-E4, D1803-CR-TE4, V2403-CR-E4, V2403-CR-TE4,

V2403-CR-TE4BG ..........................................................................................................................2-29

6.5 System wiring diagram for D1803-CR-TIE4, V2403-CR-TIE4 ........................................................2-31

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

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KiSC issued 12, 2018 A

SPECIAL TOOLS.............................................................................................................................................2-33

1. Diesel engine compression tester

..........................................................................................................2-33

2. Compression tester adapter K

................................................................................................................2-34

3. Oil pressure tester ..................................................................................................................................2-35

4. Valve guide replacing tool....................................................................................................................... 2-35

5. Bushing replacing tools ..........................................................................................................................2-35

6. Flywheel stopper ....................................................................................................................................2-36

7. Crankshaft bearing 1 replacing tool........................................................................................................2-36

8. Auxiliary socket for fixing crankshaft sleeve ...........................................................................................2-37

9. Injection top correction jig.......................................................................................................................2-38

10. Bearing case cover oil seal replacing tool ............................................................................................2-40

3. MAINTENANCE

MAINTENANCE CHECK LIST...........................................................................................................................3-1

CHECK AND MAINTENANCE...........................................................................................................................3-5

1. Daily check points.....................................................................................................................................3-5

1.1 Checking engine oil level ..................................................................................................................3-5

1.2 Checking fuel level ............................................................................................................................3-6

1.3 Checking coolant level ......................................................................................................................3-6

1.4 Checking fan belt ..............................................................................................................................3-7

2. Check points of initial 50 hours.................................................................................................................3-7

2.1 Changing engine oil ..........................................................................................................................3-7

2.2 Replacing oil filter cartridge...............................................................................................................3-8

3. Check point of every 50 hours..................................................................................................................3-8

3.1 Checking fuel hoses and clamp bands .............................................................................................3-8

3.2 Checking and draining water separator (Type 1) .............................................................................. 3-9

4. Check points of every 250 hours ..............................................................................................................3-9

4.1 Cleaning air cleaner primary element ...............................................................................................3-9

4.2 Adjusting fan belt tension ................................................................................................................3-10

4.3 Checking radiator hose and clamp bands.......................................................................................3-10

4.4 Checking intake air line ................................................................................................................... 3-11

5. Check points of every 400 hours ............................................................................................................ 3-11

5.1 Changing engine oil ........................................................................................................................ 3-11

5.2 Replacing oil filter cartridge.............................................................................................................3-12

6. Check points of every 500 hours ............................................................................................................3-12

6.1 Replacing fuel filter cartridge...........................................................................................................3-12

6.2 Cleaning water separator (Type 1) ..................................................................................................3-13

6.3 Replacing water separator filter (Type 2) ........................................................................................ 3-13

6.4 Cleaning water jacket and radiator interior......................................................................................3-13

6.5 Replacing fan belt ...........................................................................................................................3-15

7. Check point of every 1000 hours............................................................................................................3-16

7.1 Checking valve clearance ...............................................................................................................3-16

8. Check points of every 1500 hours ..........................................................................................................3-17

8.1 Checking injector (with Diagmaster) ...............................................................................................3-17

8.2 Checking EGR cooler......................................................................................................................3-18

8.3 Replacing oil separator element......................................................................................................3-19

8.4 Checking positive crankcase ventilation (PCV) valve .....................................................................3-19

9. Check points of every 3000 hours ..........................................................................................................3-20

9.1 Checking turbocharger....................................................................................................................3-20

9.2 Cleaning DPF..................................................................................................................................3-20

9.3 Judging reuse of DPF filter comp before cleaning (Service dealer)................................................ 3-22

9.4 Judging reuse of DPF filter comp after cleaning (Cleaning contractor)........................................... 3-23

9.5 Checking EGR system (with Diagmaster).......................................................................................3-24

10. Check points of every 1 year ................................................................................................................3-25

10.1 Replacing air cleaner element.......................................................................................................3-25

10.2 Checking DPF differential pressure pipes and hoses ...................................................................3-25

10.3 Checking EGR piping....................................................................................................................3-26

10.4 Checking intake air line .................................................................................................................3-26

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KiSC issued 12, 2018 A

10.5 Checking exhaust manifold ...........................................................................................................3-27

10.6 Replacing water separator filter (T

ype 2)

......................................................................................3-27

11. Check points of every 2 years............................................................................................................... 3-27

11.1 Replacing fan belt.......................................................................................................................... 3-27

11.2 Replacing oil separator rubber hose.............................................................................................. 3-27

11.3 Replacing rubber hose of differential pressure sensor ..................................................................3-28

11.4 Replacing intake hose (after air flow sensor) and intercooler hose............................................... 3-28

11.5 Replacing EGR cooler hose .......................................................................................................... 3-28

11.6 Replacing water hose ....................................................................................................................3-28

11.7 Replacing lubricant hose ............................................................................................................... 3-28

11.8 Changing radiator coolant .............................................................................................................3-28

11.9 Replacing radiator hose and clamp bands .................................................................................... 3-30

11.10 Replacing fuel hose and clamps.................................................................................................. 3-31

11.11 Replacing intake air line...............................................................................................................3-31

4. ENGINE

MECHANISM .....................................................................................................................................................4-1

1. General (Introduction)...............................................................................................................................4-1

1.1 Feature of combustion (E-CDIS).......................................................................................................4-1

1.2 Structure of combustion (Center direct injection system (E-CDIS)) ..................................................4-1

1.3 Flow of combustion (E-CDIS)............................................................................................................4-1

1.4 Control of combustion (E-CDIS)........................................................................................................4-2

2. Engine body..............................................................................................................................................4-3

2.1 Structure of engine body ...................................................................................................................4-3

2.2 Feature of engine body .....................................................................................................................4-4

2.3 Crankcase .........................................................................................................................................4-4

2.3.1 Outline of crankcase .................................................................................................................4-4

2.3.2 Structure of crankcase..............................................................................................................4-4

2.3.3 Function of crankcase...............................................................................................................4-4

2.3.4 Specification of crankcase ........................................................................................................4-4

2.4 Cylinder head ....................................................................................................................................4-4

2.4.1 Outline of cylinder head ............................................................................................................4-4

2.4.2 Structure of cylinder head.........................................................................................................4-4

2.4.3 Function of cylinder head..........................................................................................................4-4

2.5 Cylinder head cover ..........................................................................................................................4-5

2.5.1 Outline of cylinder head cover ..................................................................................................4-5

2.5.2 Structure of cylinder head cover ...............................................................................................4-5

2.5.3 Function of cylinder head cover................................................................................................4-5

2.6 Breather ............................................................................................................................................4-5

2.6.1 Outline of breather ....................................................................................................................4-5

2.6.2 Structure of breather.................................................................................................................4-5

2.6.3 Function of breather..................................................................................................................4-5

2.7 Oil separator......................................................................................................................................4-5

2.7.1 Outline of oil separator..............................................................................................................4-5

2.7.2 Structure of oil separator ..........................................................................................................4-6

2.7.3 Function of oil separator ...........................................................................................................4-6

2.8 Piston ................................................................................................................................................4-6

2.8.1 Outline of piston........................................................................................................................4-6

2.8.2 Structure of piston.....................................................................................................................4-6

2.8.3 Function of piston .....................................................................................................................4-6

2.8.4 Specification of piston...............................................................................................................4-6

2.9 Piston ring .........................................................................................................................................4-7

2.9.1 Outline of piston ring.................................................................................................................4-7

2.9.2 Structure of piston ring..............................................................................................................4-7

2.9.3 Function of piston ring ..............................................................................................................4-7

2.9.4 Specification of piston ring........................................................................................................4-7

2.10 Connecting rod................................................................................................................................4-7

2.10.1 Outline of connecting rod........................................................................................................4-7

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

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KiSC issued 12, 2018 A

2.10.2 Structure of connecting rod.....................................................................................................4-7

2.10.3 Function of connecting rod

.....................................................................................................4-8

2.1

1 Crankshaft ....................................................................................................................................... 4-8

2.11.1 Outline of crankshaft ............................................................................................................... 4-8

2.11.2 Structure of crankshaft ............................................................................................................4-8

2.11.3 Function of crankshaft............................................................................................................. 4-8

2.11.4 Specification of crankshaft ...................................................................................................... 4-8

2.12 Main bearing case...........................................................................................................................4-8

2.12.1 Outline of main bearing case ..................................................................................................4-8

2.12.2 Structure of main bearing case...............................................................................................4-8

2.12.3 Function of main bearing case................................................................................................4-8

2.13 Flywheel ..........................................................................................................................................4-9

2.13.1 Outline of flywheel ..................................................................................................................4-9

2.13.2 Structure of flywheel ...............................................................................................................4-9

2.13.3 Function of flywheel ................................................................................................................4-9

2.13.4 Specification of flywheel .........................................................................................................4-9

2.14 Rocker arm......................................................................................................................................4-9

2.14.1 Outline of rocker arm ..............................................................................................................4-9

2.14.2 Structure of rocker arm ...........................................................................................................4-9

2.14.3 Function of rocker arm..........................................................................................................4-10

2.15 Camshaft.......................................................................................................................................4-10

2.15.1 Outline of camshaft...............................................................................................................4-10

2.15.2 Structure of camshaft............................................................................................................4-10

2.15.3 Function of camshaft ............................................................................................................4-10

2.15.4 Specification of camshaft......................................................................................................4-10

2.16 Valve..............................................................................................................................................4-10

2.16.1 Outline of valve .....................................................................................................................4-10

2.16.2 Structure of valve..................................................................................................................4-10

2.16.3 Function of valve...................................................................................................................4-10

2.16.4 Specification of valve ............................................................................................................4-10

2.17 Tappet ........................................................................................................................................... 4-11

2.17.1 Outline of tappet ................................................................................................................... 4-11

2.17.2 Structure of tappet ................................................................................................................ 4-11

2.17.3 Function of tappet ................................................................................................................. 4-11

2.18 Push rod........................................................................................................................................ 4-11

2.18.1 Outline of push rod ............................................................................................................... 4-11

2.18.2 Structure of push rod ............................................................................................................ 4-11

2.18.3 Function of push rod .............................................................................................................4-12

2.19 Timing gears..................................................................................................................................4-12

2.19.1 Outline of timing gears..........................................................................................................4-12

2.19.2 Structure of timing gears.......................................................................................................4-12

2.19.3 Function of timing gears .......................................................................................................4-12

3. Fuel system ............................................................................................................................................4-13

3.1 Structure of common rail system (CRS) engine..............................................................................4-13

3.2 Feature of common rail system (CRS) engine ................................................................................4-14

3.3 Flow of common rail system (CRS) engine.....................................................................................4-15

3.4 Control of common rail system (CRS) engine.................................................................................4-17

3.5 Fuel tank .........................................................................................................................................4-17

3.5.1 Outline of fuel tank..................................................................................................................4-17

3.5.2 Structure of fuel tank...............................................................................................................4-17

3.5.3 Function of fuel tank ...............................................................................................................4-17

3.5.4 Specification of fuel tank.........................................................................................................4-17

3.6 Water separator...............................................................................................................................4-17

3.6.1 Outline of water separator ......................................................................................................4-17

3.6.2 Structure of water separator (Type1) ...................................................................................... 4-17

3.6.3 Structure of water separator (Type2) ...................................................................................... 4-17

3.6.4 Function of water separator ....................................................................................................4-18

3.6.5 Specification of water separator (Type2) ................................................................................ 4-18

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D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

KiSC issued 12, 2018 A

3.7 Electromagnetic fuel feed pump......................................................................................................4-18

3.7.1 Outline of electromagnetic fuel feed pump

.............................................................................4-18

3.7.2 Structure of electromagnetic fuel feed pump

..........................................................................4-18

3.7.3 Function of electromagnetic fuel feed pump........................................................................... 4-18

3.7.4 Specification of electromagnetic fuel feed pump ....................................................................4-18

3.8 Fuel feed pump ...............................................................................................................................4-19

3.8.1 Outline of fuel feed pump........................................................................................................4-19

3.8.2 Structure of fuel feed pump ....................................................................................................4-19

3.8.3 Function of fuel feed pump .....................................................................................................4-19

3.8.4 Specification of fuel feed pump...............................................................................................4-19

3.9 Fuel filter .........................................................................................................................................4-20

3.9.1 Outline of fuel filter..................................................................................................................4-20

3.9.2 Structure of fuel filter...............................................................................................................4-20

3.9.3 Function of fuel filter ...............................................................................................................4-20

3.9.4 Specification of fuel filter.........................................................................................................4-20

3.10 Supply pump .................................................................................................................................4-20

3.10.1 Outline of supply pump .........................................................................................................4-20

3.10.2 Structure of supply pump......................................................................................................4-20

3.10.3 Function of supply pump.......................................................................................................4-21

3.10.4 Specification of supply pump ................................................................................................4-23

3.11 Injection pipe .................................................................................................................................4-23

3.11.1 Outline of injection pipe......................................................................................................... 4-23

3.11.2 Structure of injection pipe...................................................................................................... 4-23

3.11.3 Function of injection pipe ......................................................................................................4-24

3.12 Rail assembly................................................................................................................................4-24

3.12.1 Outline of rail assembly ........................................................................................................4-24

3.12.2 Structure of rail assembly .....................................................................................................4-24

3.12.3 Function of rail assembly ......................................................................................................4-24

3.12.4 Specification of rail assembly ...............................................................................................4-25

3.13 Injector ..........................................................................................................................................4-26

3.13.1 Outline of injector..................................................................................................................4-26

3.13.2 Structure of injector...............................................................................................................4-26

3.13.3 Function of injector ...............................................................................................................4-27

3.13.4 Specification of injector.........................................................................................................4-29

3.14 Overflow pipe ................................................................................................................................4-29

3.14.1 Outline of overflow pipe ........................................................................................................4-29

3.14.2 Structure of overflow pipe .....................................................................................................4-29

3.14.3 Function of overflow pipe......................................................................................................4-29

3.15 Check valve...................................................................................................................................4-29

3.15.1 Outline of check valve...........................................................................................................4-29

3.15.2 Structure of check valve .......................................................................................................4-29

3.15.3 Function of check valve ........................................................................................................4-29

3.15.4 Specification of check valve..................................................................................................4-29

3.16 Fuel cooler ....................................................................................................................................4-29

3.16.1 Outline of fuel cooler.............................................................................................................4-29

3.16.2 Structure of fuel cooler..........................................................................................................4-30

3.16.3 Function of fuel cooler ..........................................................................................................4-30

3.17 Engine ECU ..................................................................................................................................4-30

3.17.1 Outline of engine ECU ..........................................................................................................4-30

3.17.2 Structure of engine ECU.......................................................................................................4-30

3.17.3 Function of engine ECU........................................................................................................4-30

3.17.4 Specification of engine ECU .................................................................................................4-30

3.18 Crankshaft position sensor............................................................................................................4-31

3.18.1 Outline of crankshaft position sensor....................................................................................4-31

3.18.2 Structure of crankshaft position sensor ................................................................................4-31

3.18.3 Function of crankshaft position sensor .................................................................................4-31

3.18.4 Specification of crankshaft position sensor........................................................................... 4-31

3.19 Camshaft position sensor..............................................................................................................4-32

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

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3.19.1 Outline of camshaft position sensor......................................................................................4-32

3.19.2 Structure of camshaft position sensor

..................................................................................4-32

3.19.3 Function of camshaft position sensor

...................................................................................4-32

3.19.4 Specification of camshaft position sensor.............................................................................4-32

3.20 Coolant temperature sensor..........................................................................................................4-33

3.20.1 Outline of coolant temperature sensor.................................................................................. 4-33

3.20.2 Structure of coolant temperature sensor ..............................................................................4-33

3.20.3 Function of coolant temperature sensor ...............................................................................4-33

3.20.4 Specification of coolant temperature sensor......................................................................... 4-33

3.21 Boost pressure sensor ..................................................................................................................4-34

3.21.1 Outline of boost pressure sensor..........................................................................................4-34

3.21.2 Structure of boost pressure sensor.......................................................................................4-34

3.21.3 Function of boost pressure sensor .......................................................................................4-34

3.21.4 Specification of boost pressure sensor.................................................................................4-34

3.22 Atmosphere pressure sensor ........................................................................................................4-34

3.22.1 Outline of atmosphere pressure sensor................................................................................4-34

3.22.2 Structure of atmosphere pressure sensor ............................................................................4-34

3.22.3 Function of atmosphere pressure sensor .............................................................................4-34

3.23 Fuel camshaft................................................................................................................................4-35

3.23.1 Outline of fuel camshaft ........................................................................................................4-35

3.23.2 Structure of fuel camshaft.....................................................................................................4-35

3.23.3 Function of fuel camshaft......................................................................................................4-35

4. Intake and exhaust system.....................................................................................................................4-36

4.1 Structure of intake and exhaust system ..........................................................................................4-36

4.2 Feature of intake and exhaust system ............................................................................................4-37

4.3 Flow of intake and exhaust system .................................................................................................4-38

4.4 Control of intake and exhaust system .............................................................................................4-40

4.5 Pre-cleaner......................................................................................................................................4-40

4.5.1 Outline of pre-cleaner .............................................................................................................4-40

4.5.2 Structure of pre-cleaner ..........................................................................................................4-40

4.5.3 Function of pre-cleaner...........................................................................................................4-40

4.5.4 Specification of pre-cleaner ....................................................................................................4-40

4.6 Air cleaner .......................................................................................................................................4-40

4.6.1 Outline of air cleaner...............................................................................................................4-40

4.6.2 Structure of air cleaner ...........................................................................................................4-40

4.6.3 Function of air cleaner ............................................................................................................4-40

4.6.4 Specification of air cleaner......................................................................................................4-40

4.7 Turbocharger...................................................................................................................................4-40

4.7.1 Outline of turbocharger ...........................................................................................................4-40

4.7.2 Structure of turbocharger........................................................................................................4-41

4.7.3 Function of turbocharger.........................................................................................................4-41

4.7.4 Specification of turbocharger ..................................................................................................4-41

4.8 Intercooler .......................................................................................................................................4-41

4.8.1 Outline of intercooler...............................................................................................................4-41

4.8.2 Structure of intercooler ...........................................................................................................4-41

4.8.3 Function of intercooler ............................................................................................................4-41

4.8.4 Specification of intercooler......................................................................................................4-41

4.9 Glow plug ........................................................................................................................................4-42

4.9.1 Outline of glow plug ................................................................................................................4-42

4.9.2 Structure of glow plug .............................................................................................................4-42

4.9.3 Function of glow plug..............................................................................................................4-42

4.9.4 Specification of glow plug .......................................................................................................4-42

4.10 Intake manifold..............................................................................................................................4-42

4.10.1 Outline of intake manifold .....................................................................................................4-42

4.10.2 Structure of intake manifold ..................................................................................................4-42

4.10.3 Function of intake manifold...................................................................................................4-42

4.11 Exhaust manifold ...........................................................................................................................4-42

4.11.1 Outline of exhaust manifold................................................................................................... 4-42

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KiSC issued 12, 2018 A

4.11.2 Structure of exhaust manifold ...............................................................................................4-42

4.1

1.3 Function of exhaust manifold

................................................................................................4-43

5. Exhaust gas recirculation (EGR) system................................................................................................4-44

5.1 Structure of EGR system ................................................................................................................4-44

5.2 Feature of EGR system...................................................................................................................4-45

5.3 Flow of EGR system........................................................................................................................4-46

5.4 Control of EGR system ...................................................................................................................4-47

5.5 EGR cooler......................................................................................................................................4-47

5.5.1 Outline of EGR cooler.............................................................................................................4-47

5.5.2 Structure of EGR cooler..........................................................................................................4-47

5.5.3 Function of EGR cooler ..........................................................................................................4-47

5.5.4 Specification of EGR cooler....................................................................................................4-47

5.6 EGR valve .......................................................................................................................................4-47

5.6.1 Outline of EGR valve ..............................................................................................................4-47

5.6.2 Structure of EGR valve ...........................................................................................................4-48

5.6.3 Function of EGR valve............................................................................................................4-50

5.6.4 Specification of EGR valve .....................................................................................................4-50

5.7 Reed valve ......................................................................................................................................4-50

5.7.1 Outline of reed valve...............................................................................................................4-50

5.7.2 Structure of reed valve............................................................................................................4-50

5.7.3 Function of reed valve ............................................................................................................4-50

6. Lubricating system..................................................................................................................................4-51

6.1 Structure of lubricating system........................................................................................................4-51

6.2 Feature of lubricating system ..........................................................................................................4-52

6.3 Flow of lubricating system...............................................................................................................4-53

6.4 Oil pan.............................................................................................................................................4-55

6.4.1 Outline of oil pan.....................................................................................................................4-55

6.4.2 Structure of oil pan..................................................................................................................4-55

6.4.3 Function of oil pan ..................................................................................................................4-55

6.4.4 Specification of oil pan............................................................................................................4-55

6.5 Oil strainer.......................................................................................................................................4-55

6.5.1 Outline of oil strainer...............................................................................................................4-55

6.5.2 Structure of oil strainer............................................................................................................4-55

6.5.3 Function of oil strainer ............................................................................................................4-55

6.5.4 Specification of oil strainer......................................................................................................4-55

6.6 Oil pump..........................................................................................................................................4-56

6.6.1 Outline of oil pump..................................................................................................................4-56

6.6.2 Structure of oil pump...............................................................................................................4-56

6.6.3 Function of oil pump ...............................................................................................................4-56

6.6.4 Specification of oil pump.........................................................................................................4-56

6.7 Relief valve......................................................................................................................................4-56

6.7.1 Outline of relief valve ..............................................................................................................4-56

6.7.2 Structure of relief valve ...........................................................................................................4-56

6.7.3 Function of relief valve............................................................................................................4-57

6.8 Oil filter ............................................................................................................................................4-57

6.8.1 Outline of oil filter ....................................................................................................................4-57

6.8.2 Structure of oil filter.................................................................................................................4-57

6.8.3 Function of oil filter..................................................................................................................4-57

6.8.4 Specification of oil filter ...........................................................................................................4-57

6.9 Oil cooler .........................................................................................................................................4-57

6.9.1 Outline of oil cooler .................................................................................................................4-57

6.9.2 Structure of oil cooler..............................................................................................................4-57

6.9.3 Function of oil cooler...............................................................................................................4-58

6.9.4 Specification of oil cooler ........................................................................................................4-58

6.10 Oil pressure switch........................................................................................................................4-58

6.10.1 Outline of oil pressure switch................................................................................................4-58

6.10.2 Structure of oil pressure switch.............................................................................................4-58

6.10.3 Function of oil pressure switch .............................................................................................4-58

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

ix

KiSC issued 12, 2018 A

6.10.4 Specification of oil pressure switch.......................................................................................4-59

7. Cooling system

.......................................................................................................................................4-60

7.1 Structure of cooling system

.............................................................................................................4-60

7.2 Feature of cooling system ...............................................................................................................4-61

7.3 Flow of cooling system (Bottom by-pass system) ...........................................................................4-61

7.4 Control of cooling system (Bottom by-pass system) .......................................................................4-61

7.5 Water pump.....................................................................................................................................4-61

7.5.1 Outline of water pump.............................................................................................................4-61

7.5.2 Structure of water pump .........................................................................................................4-61

7.5.3 Function of water pump ..........................................................................................................4-62

7.6 Thermostat ......................................................................................................................................4-62

7.6.1 Outline of thermostat ..............................................................................................................4-62

7.6.2 Structure of thermostat ...........................................................................................................4-62

7.6.3 Function of thermostat ............................................................................................................4-62

7.6.4 Specification of thermostat .....................................................................................................4-62

7.7 Radiator...........................................................................................................................................4-63

7.7.1 Outline of radiator ...................................................................................................................4-63

7.7.2 Structure of radiator ................................................................................................................4-63

7.7.3 Function of radiator.................................................................................................................4-63

7.7.4 Specification of radiator ..........................................................................................................4-63

7.8 Radiator cap....................................................................................................................................4-63

7.8.1 Outline of radiator cap ............................................................................................................4-63

7.8.2 Structure of radiator cap .........................................................................................................4-63

7.8.3 Function of radiator cap ..........................................................................................................4-64

7.8.4 Specification of radiator cap ...................................................................................................4-64

7.9 Cooling fan ......................................................................................................................................4-64

7.9.1 Outline of cooling fan ..............................................................................................................4-64

7.9.2 Structure of cooling fan...........................................................................................................4-64

7.9.3 Function of cooling fan............................................................................................................4-64

7.9.4 Specification of cooling fan .....................................................................................................4-64

7.10 Reserve tank .................................................................................................................................4-65

7.10.1 Outline of reserve tank..........................................................................................................4-65

7.10.2 Structure of reserve tank ......................................................................................................4-65

7.10.3 Function of reserve tank .......................................................................................................4-65

7.11 Fan belt..........................................................................................................................................4-65

7.11.1 Outline of fan belt ..................................................................................................................4-65

7.11.2 Structure of fan belt............................................................................................................... 4-65

7.11.3 Function of fan belt................................................................................................................4-65

8. Electrical system.....................................................................................................................................4-66

8.1 Structure of electrical system ..........................................................................................................4-66

8.2 Feature of electrical system ............................................................................................................4-67

8.3 Flow of electrical system .................................................................................................................4-68

8.4 Control of electrical system .............................................................................................................4-70

8.5 Battery.............................................................................................................................................4-70

8.5.1 Outline of battery ....................................................................................................................4-70

8.5.2 Structure of battery .................................................................................................................4-70

8.5.3 Function of battery ..................................................................................................................4-70

8.5.4 Specification of battery ...........................................................................................................4-70

8.6 Key switch .......................................................................................................................................4-70

8.6.1 Outline of key switch...............................................................................................................4-70

8.6.2 Structure of key switch............................................................................................................4-70

8.6.3 Function of key switch ............................................................................................................4-71

8.6.4 Specification of key switch......................................................................................................4-71

8.7 Starter (Planetary gear reduction type) ...........................................................................................4-71

8.7.1 Outline of starter (planetary gear reduction type) ...................................................................4-71

8.7.2 Structure of starter (planetary gear reduction type) ................................................................4-71

8.7.3 Function of starter (planetary gear reduction type).................................................................4-71

8.7.4 Specification of starter (planetary gear reduction type) ..........................................................4-72

x

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

KiSC issued 12, 2018 A

8.8 Alternator.........................................................................................................................................4-72

8.8.1 Outline of alternator

................................................................................................................4-72

8.8.2 Structure of alternator

.............................................................................................................4-72

8.8.3 Function of alternator..............................................................................................................4-72

8.8.4 Specification of alternator .......................................................................................................4-74

9. Aftertreatment system ............................................................................................................................4-75

9.1 Structure of diesel particulate filter (DPF) system...........................................................................4-75

9.2 Feature of diesel particulate filter (DPF) system .............................................................................4-75

9.3 Flow of diesel particulate filter (DPF) system..................................................................................4-75

9.4 Control of diesel particulate filter (DPF) system..............................................................................4-76

9.5 Structure of diesel oxidation catalyst (DOC) system.......................................................................4-78

9.6 Feature of diesel oxidation catalyst (DOC) system .........................................................................4-78

9.7 Flow of diesel oxidation catalyst (DOC) system..............................................................................4-78

9.8 Diesel oxidation catalyst (DOC) ......................................................................................................4-79

9.8.1 Outline of diesel oxidation catalyst (DOC) ..............................................................................4-79

9.8.2 Structure of diesel oxidation catalyst (DOC)...........................................................................4-79

9.8.3 Function of diesel oxidation catalyst (DOC)............................................................................4-79

9.9 Diesel particulate filter (DPF) ..........................................................................................................4-79

9.9.1 Outline of diesel particulate filter (DPF) ..................................................................................4-79

9.9.2 Structure of diesel particulate filter (DPF)...............................................................................4-79

9.9.3 Function of diesel particulate filter (DPF)................................................................................4-80

9.10 Air flow sensor...............................................................................................................................4-80

9.10.1 Outline of air flow sensor ......................................................................................................4-80

9.10.2 Structure of air flow sensor ...................................................................................................4-80

9.10.3 Function of air flow sensor....................................................................................................4-80

9.10.4 Specification of air flow sensor .............................................................................................4-81

9.11 Exhaust gas temperature sensor................................................................................................... 4-81

9.11.1 Outline of exhaust gas temperature sensor .......................................................................... 4-81

9.11.2 Structure of exhaust gas temperature sensor .......................................................................4-81

9.11.3 Function of exhaust gas temperature sensor........................................................................ 4-82

9.11.4 Specification of exhaust gas temperature sensor ................................................................. 4-82

9.12 Differential pressure sensor ..........................................................................................................4-83

9.12.1 Outline of differential pressure sensor ..................................................................................4-83

9.12.2 Structure of differential pressure sensor...............................................................................4-83

9.12.3 Function of differential pressure sensor................................................................................4-83

9.12.4 Specification of differential pressure sensor .........................................................................4-83

9.13 Intake throttle valve .......................................................................................................................4-84

9.13.1 Outline of intake throttle valve ..............................................................................................4-84

9.13.2 Structure of intake throttle valve ...........................................................................................4-84

9.13.3 Function of intake throttle valve ............................................................................................4-84

9.13.4 Specification of intake throttle valve .....................................................................................4-84

SERVICING .....................................................................................................................................................4-87

1. Troubleshooting ...................................................................................................................................... 4-87

1.1 Troubleshooting for 03 series engine .............................................................................................. 4-87

2. Service specifications .............................................................................................................................4-91

2.1 Service specifications for engine.....................................................................................................4-91

3. Tightening torques .................................................................................................................................. 4-96

3.1 Tightening torques of screws, bolts and nuts for general use ......................................................... 4-96

3.2 Tightening torques of screws, bolts and nuts for special use.......................................................... 4-96

4. Checking and adjusting ..........................................................................................................................4-98

4.1 Checking compression pressure of cylinder ...................................................................................4-98

4.2 Adjusting valve clearance ...............................................................................................................4-98

4.3 Checking engine oil pressure..........................................................................................................4-99

4.4 Checking fan belt tension..............................................................................................................4-100

4.5 Checking fan belt damage and wear.............................................................................................4-100

4.6 Checking radiator cap air leakage.................................................................................................4-100

4.7 Checking radiator water leakage...................................................................................................4-101

4.8 Checking opening temperature of thermostat valve...................................................................... 4-101

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

xi

KiSC issued 12, 2018 A

4.9 Checking battery voltage...............................................................................................................4-102

4.10 Checking battery specific gravity

.................................................................................................4-

102

4.11 Checking starter motor ................................................................................................................ 4-103

4.12 Checking magnetic switch of starter ...........................................................................................4-104

4.13 Checking magnetic switch continuity ..........................................................................................4-105

4.14 Checking alternator on unit .........................................................................................................4-105

4.15 Checking glow plug continuity.....................................................................................................4-106

4.16 Checking exhaust gas leakage of turbocharger turbine side ...................................................... 4-106

4.17 Checking air leakage of turbocharger compressor side..............................................................4-106

4.18 Checking radial clearance of turbocharger .................................................................................4-107

4.19 Checking injector.........................................................................................................................4-107

4.20 Checking suction control valve (SCV).........................................................................................4-107

4.21 Checking rail pressure sensor.....................................................................................................4-108

4.22 Checking boost pressure sensor.................................................................................................4-108

4.23 Checking crankshaft position sensor ..........................................................................................4-109

4.24 Checking camshaft position sensor ............................................................................................4-109

4.25 Checking coolant temperature sensor ........................................................................................4-109

4.26 Checking EGR system ................................................................................................................ 4-110

4.27 Checking air flow sensor ............................................................................................................. 4-110

4.28 Checking exhaust gas temperature sensor................................................................................. 4-111

4.29 Selecting cylinder head gasket ................................................................................................... 4-111

4.30 Measuring angular deviation between crankshaft T.D.C. and crankshaft position sensor

detected T.D.C. ........................................................................................................................... 4-112

4.31 Adjusting air gap between crankshaft position sensor and flywheel ........................................... 4-114

4.32 Adjusting air gap between camshaft position sensor and pulsar gear ........................................ 4-115

5. Disassembling ...................................................................................................................................... 4-115

5.1 Draining engine oil ........................................................................................................................ 4-115

5.2 Draining coolant ............................................................................................................................ 4-115

5.3 Removing CRS intermediate harness........................................................................................... 4-116

5.4 Removing external components.................................................................................................... 4-116

5.5 Removing muffler full assembly .................................................................................................... 4-117

5.6 Disassembling DPF assembly ...................................................................................................... 4-118

5.7 Removing EGR cooler .................................................................................................................. 4-119

5.8 Removing turbocharger................................................................................................................. 4-119

5.9 Removing intake throttle valve ......................................................................................................4-120

5.10 Removing EGR valve..................................................................................................................4-120

5.11 Removing common rail................................................................................................................ 4-120

5.12 Removing sensors ......................................................................................................................4-121

5.13 Removing cylinder head cover....................................................................................................4-122

5.14 Removing glow plug....................................................................................................................4-122

5.15 Removing injector .......................................................................................................................4-122

5.16 Removing rocker arm assembly..................................................................................................4-123

5.17 Removing cylinder head..............................................................................................................4-123

5.18 Removing tappet .........................................................................................................................4-124

5.19 Removing valve...........................................................................................................................4-124

5.20 Removing thermostat assembly..................................................................................................4-124

5.21 Removing suction control valve (SCV)........................................................................................4-124

5.22 Removing supply pump...............................................................................................................4-125

5.23 Removing oil cooler.....................................................................................................................4-125

5.24 Removing water pump ................................................................................................................4-126

5.25 Removing fan drive pulley...........................................................................................................4-126

5.26 Removing gear case cover .........................................................................................................4-126

5.27 Removing crankshaft oil slinger ..................................................................................................4-126

5.28 Removing idle gear .....................................................................................................................4-127

5.29 Removing fuel camshaft assembly .............................................................................................4-127

5.30 Removing camshaft with cam gear .............................................................................................4-128

5.31 Removing oil pump .....................................................................................................................4-128

5.32 Removing crank gear ..................................................................................................................4-128

xii

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

KiSC issued 12, 2018 A

5.33 Removing oil pan and oil strainer................................................................................................4-129

5.34 Removing piston

.........................................................................................................................4-

129

5.35 Removing piston ring ..................................................................................................................4-129

5.36 Disassembling piston assembly ..................................................................................................4-130

5.37 Removing flywheel ......................................................................................................................4-130

5.38 Removing flywheel housing ........................................................................................................4-131

5.39 Removing bearing case cover.....................................................................................................4-131

5.40 Removing crankshaft (for 3 cylinders).........................................................................................4-131

5.41 Removing crankshaft (for 4 cylinders).........................................................................................4-132

5.42 Removing main bearing case......................................................................................................4-133

5.43 Disassembling starter..................................................................................................................4-133

5.44 Disassembling alternator.............................................................................................................4-133

6. Assembling ...........................................................................................................................................4-134

6.1 Assembling alternator ...................................................................................................................4-134

6.2 Assembling starter ........................................................................................................................4-136

6.3 Installing main bearing case..........................................................................................................4-137

6.4 Installing crankshaft (for 3 cylinders).............................................................................................4-138

6.5 Installing crankshaft (for 4 cylinders).............................................................................................4-138

6.6 Installing bearing case cover.........................................................................................................4-139

6.7 Installing flywheel housing ............................................................................................................4-139

6.8 Installing flywheel ..........................................................................................................................4-139

6.9 Assembling piston assembly.........................................................................................................4-140

6.10 Installing piston ring ....................................................................................................................4-141

6.11 Installing piston............................................................................................................................ 4-141

6.12 Installing oil strainer and oil pan..................................................................................................4-143

6.13 Installing crank gear ....................................................................................................................4-144

6.14 Installing oil pump .......................................................................................................................4-144

6.15 Installing camshaft with cam gear ...............................................................................................4-144

6.16 Installing fuel camshaft with supply pump gear........................................................................... 4-145

6.17 Installing idle gear .......................................................................................................................4-145

6.18 Installing crankshaft oil slinger ....................................................................................................4-146

6.19 Installing gear case cover ...........................................................................................................4-146

6.20 Installing fan drive pulley.............................................................................................................4-146

6.21 Installing water pump ..................................................................................................................4-147

6.22 Installing oil cooler.......................................................................................................................4-147

6.23 Installing supply pump.................................................................................................................4-148

6.24 Installing suction control valve (SCV)..........................................................................................4-148

6.25 Installing thermostat assembly....................................................................................................4-149

6.26 Installing valve.............................................................................................................................4-149

6.27 Installing tappet ...........................................................................................................................4-149

6.28 Installing cylinder head................................................................................................................4-149

6.29 Installing rocker arm assembly....................................................................................................4-151

6.30 Installing injector .........................................................................................................................4-151

6.31 Installing glow plug......................................................................................................................4-152

6.32 Installing cylinder head cover......................................................................................................4-153

6.33 Installing sensors ........................................................................................................................4-153

6.34 Installing common rail .................................................................................................................4-154

6.35 Installing EGR valve....................................................................................................................4-155

6.36 Installing intake throttle valve ......................................................................................................4-155

6.37 Installing turbocharger assembly ................................................................................................4-155

6.38 Installing EGR cooler ..................................................................................................................4-156

6.39 Assembling DPF assembly .........................................................................................................4-156

6.40 Installing muffler full assembly ....................................................................................................4-157

6.41 Installing CRS intermediate harness...........................................................................................4-159

6.42 Installing external components....................................................................................................4-161

6.43 Filling coolant ..............................................................................................................................4-162

6.44 Filling engine oil ..........................................................................................................................4-162

7. Servicing...............................................................................................................................................4-162

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

xiii

KiSC issued 12, 2018 A

7.1 Checking cylinder head top clearance ..........................................................................................4-162

7.2 Checking cylinder head surface flatness

.......................................................................................4-

163

7.3 Checking cylinder head flaw .........................................................................................................4-163

7.4 Checking valve recessing .............................................................................................................4-164

7.5 Adjusting valve lapping .................................................................................................................4-164

7.6 Checking clearance between valve stem and valve guide............................................................ 4-165

7.7 Replacing valve guide ...................................................................................................................4-165

7.8 Adjusting valve angle ....................................................................................................................4-166

7.9 Adjusting valve seat ......................................................................................................................4-166

7.10 Checking free length of valve spring ...........................................................................................4-167

7.11 Checking tilt of valve spring......................................................................................................... 4-167

7.12 Checking set load of valve spring ...............................................................................................4-168

7.13 Checking oil clearance between rocker arm and rocker arm shaft .............................................4-168

7.14 Checking push rod alignment......................................................................................................4-169

7.15 Checking oil clearance between tappet and tappet guide bore ..................................................4-169

7.16 Checking timing gear backlash ...................................................................................................4-169

7.17 Checking side clearance of idle gear ..........................................................................................4-170

7.18 Checking side clearance of camshaft .........................................................................................4-170

7.19 Checking camshaft alignment .....................................................................................................4-171

7.20 Replacing idle gear bushing........................................................................................................4-171

7.21 Checking cam height...................................................................................................................4-172

7.22 Checking oil clearance between camshaft journal and crankcase bore .....................................4-172

7.23 Checking oil clearance between idle gear shaft and idle gear bushing ......................................4-173

7.24 Checking piston pin bore I.D. ......................................................................................................4-173

7.25 Checking oil clearance between piston pin and small end bushing ............................................4-173

7.26 Replacing small end bushing ......................................................................................................4-174

7.27 Checking connecting rod alignment ............................................................................................4-175

7.28 Checking piston ring gap.............................................................................................................4-175

7.29 Checking clearance between piston ring and ring groove ..........................................................4-176

7.30 Checking side clearance of crankshaft .......................................................................................4-177

7.31 Checking crankshaft alignment ...................................................................................................4-178

7.32 Checking oil clearance between crankpin and crankpin bearing ................................................ 4-179

7.33 Checking oil clearance between crankshaft journal and crankshaft bearing 1 ...........................4-179

7.34 Replacing crankshaft sleeve .......................................................................................................4-180

7.35 Replacing crankshaft bearing 1...................................................................................................4-181

7.36 Checking oil clearance between crankshaft journal and crankshaft bearing 2 ...........................4-181

7.37 Replacing bearing case cover oil seal.........................................................................................4-182

7.38 Checking cylinder wear ...............................................................................................................4-183

7.39 Adjusting cylinder correction (over size) .....................................................................................4-183

7.40 Checking clearance between inner rotor and outer rotor ............................................................4-184

7.41 Checking clearance between outer rotor and pump body........................................................... 4-184

7.42 Checking clearance between rotor and cover.............................................................................4-185

7.43 Checking overrunning clutch of starter........................................................................................4-185

7.44 Checking commutator and mica of starter ..................................................................................4-185

7.45 Checking brush wear of starter ...................................................................................................4-186

7.46 Checking brush holder of starter .................................................................................................4-187

7.47 Checking armature coil of starter ................................................................................................4-187

7.48 Checking field coil of starter ........................................................................................................4-188

7.49 Checking bearing of alternator ....................................................................................................4-188

7.50 Checking stator of alternator .......................................................................................................4-188

7.51 Checking rotor of alternator.........................................................................................................4-189

7.52 Checking slip ring of alternator....................................................................................................4-189

7.53 Checking brush wear of alternator ..............................................................................................4-190

7.54 Checking rectifier ........................................................................................................................4-190

7.55 Checking IC regulator .................................................................................................................4-190

7.56 Replacing injector........................................................................................................................4-191

7.57 Replacing engine ECU................................................................................................................4-193

7.58 Replacing DPF ............................................................................................................................4-196

xiv

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

KiSC issued 12, 2018 A

1. SAFETY

KiSC issued 12, 2018 A

SAFETY FIRST

This symbol, the industry's "Safety Alert Symbol", is

used throughout

this manual and on labels on the

machine itself to warn of the possibility of personal

injury. Read these instructions carefully. It is essential

that you read the instructions and safety regulations

before you try to repair or use this unit.

DANGER

• Indicates an

imminently hazardous situation

which, if not avoided, will result in death or

serious injury.

WARNING

• Indicates

a

potentially hazardous situation

which, if not avoided, could result in death or

serious injury.

CAUTION

• Indicates a potentially hazardous situation

which, if not avoided, could result in minor or

moderate injury.

IMPORTANT

• Indicates that

equipment or property damage

could result if instructions are not followed.

NOTE

• Gives helpful information.

1. W

orking precautions

• Understand all

safety instructions and safety labels

in this manual.

• Park the machine on a stable and level ground then

lower the attachment to check the machine safely.

• Stop the engine and remove the key when leaving

the operator's seat for cleaning, maintenance, and

servicing.

• Hang a DO NOT OPERATE tag near the operator's

seat.

• Do not use worn or cracked tools. Use tools in a

proper way with enough strength.

• In regards to the facility which is used in the work

shop, follow each safety instruction.

2. Preparing for emergencies

• Keep a first aid kit and fire extinguisher ready at all

times.

•

Keep emergency numbers near your telephone at

all times.

SAFETY FIRST

1. Working precautions 1. SAFETY

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

1-1

KiSC issued 12, 2018 A

3. Working cautions

• Wear a uniform suited for service working. Do not

wear

loose clothes as they could get caught on the

control lever.

• Wear the proper protective equipment when

checking the machine. For example helmet, eye

protector and protective shoes.

• Do not check the machine after you have

consumed alcohol or drugs or when you are tired.

• Park the machine on a stable and level ground.

Keep

the machine away from obstacles and

hazardous materials.

• Make sure to ventilate the work area in cases of

working indoors.

• Do not allow third parties to come near the

machine.

• Keep the machine clean. Remove dirt, debris, and

oil attached to the machine.

• Make sure you have the support of the 3 points with

both

hands holding the handle and one foot at the

step when getting on and off the machine.

• Confirm the

coolant temperature and release

pressure when opening the radiator cap.

• Release residual pressure in the hydraulic circuit

before removing the hydraulic components.

• Pay attention when releasing pressure in hydraulic

circuit, the machine or attachment might move

unexpectedly.

• When working under the machine, make sure the

machine does not move back and forth.

• When working under the machine, provide secure

support for the machine.

• When using a garage jack, always use with a rigid

rack to prevent the machine from falling.

1. SAFETY

SAFETY FIRST

3. Working cautions

1-2

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

KiSC issued 12, 2018 A

4. Starting the machine safely

• Do not do the following work when staring the

engine.

–

Short across starter terminals.

– Bypass the safety start switch.

• Confirm if it is safe around the machine from the

operator's seat before starting the engine.

• Do not start the engine unless seating in the

operator's seat.

• Make sure that the pilot levers are in neutral before

starting the engine.

• Lock the covers before starting the machine.

• Keep away from rotating and moving objects.

•

Keep tools and waste cloth away from rotating and

moving objects.

5. Preventing fires

• Keep fire (welding sparks, grinding sparks,

cigarettes) away from the fuel.

•

Wipe the fuel off when spilled.

• Keep fire (welding sparks, grinding sparks,

cigarettes) away from the battery. The battery

produces oxygen and hydrogen gas that are

flammable.

• Make sure to disconnect the negative (-) terminal

first when disconnecting the battery cable.

• Make sure to connect the positive (+) terminal first

when connecting the battery cable.

• Follow notes on handling diesel particulate filter

(DPF).

• Do not make a short-circuit.

• Do not splash the hydraulic oil on the exhaust

components.

SAFETY FIRST

4. Starting the machine safely 1. SAFETY

D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4

1-3

KiSC issued 12, 2018 A

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Kubota V2403-CR-E4 Workshop Manual

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